![]() Indeed, we feel that customers buying Fat Fritz 2 get very little added value for money. Furthermore, the engine Fat Fritz 2 fails to convince on independent rating lists, casting doubt on the usefulness of those modifications. ChessBase’s communication on Fat Fritz 2, claiming originality where there is none, has shocked our community. This chess engine is a Stockfish derivative, with a few lines of code modification (engine name, authors list and a few parameters), and a new set of NNUE net weights considered proprietary. Recently, ChessBase has started distribution and sales of the Fat Fritz 2 chess engine. Be assured that free engines will serve you well! We proudly provide the tools for free chess analysis to millions of users, with countless titled players using Stockfish for their preparation. The recent progress in playing strength of Stockfish confirms the path taken. ![]() ![]() We do this because we are convinced that open software and open data are key ingredients to make rapid progress, and thus for the benefit of our users. Stockfish is an open-source project, sharing and freely distributing the code, tools and data needed to deliver this chess engine. Open-source chess engines serve the chess community very well. Going forward, the Leela Chess Zero and Stockfish teams will joinįorces to demonstrate our commitment to open source chess engines and This version has won the superfinals of the TCEC Season 19 and Network retrained on billions of positions, much faster networkĮvaluation code, and significantly improved search heuristics, as When playing against a one-year-old Stockfish, it wins 60 Stockfish 13 outperforms Stockfish 12 by at leastģ5 Elo. This version of Stockfish is significantly stronger than any of its We refer to our statement on Fat Fritz 2Īnd a community blog for further information. Which is a copy of a very recent development version of Stockfish Triggered by the start of sales of the Fat Fritz 2 engine by ChessBase, High-quality releases of Stockfish! Sadly, this decision has been The good news first: from now on, our users can expect more frequent Who contribute their expertise, time, and resources to build a freeĪnd open-source chess engine that is robust, widely available, and The Stockfish project builds on a thriving community of enthusiasts If you know what you’re doing, then you can grab Stockfish 16 from the download page.It is our pleasure to release Stockfish 13 to chess fans worldwide.Īs usual, downloads are freely available at If you’ve never used Stockfish before, Neowin has a getting-started guide. It includes guides for users looking to start using Stockfish and for developers who want to compile the engine from the source, include Stockfish in their projects, or contribute to the project. The Stockfish team noted that this means the top chess engines are under free and open-source software licenses.Īside from all the engine improvements, the team said that Stockfish now includes documentation inside the wiki folder when you download the engine, you can also read it on GitHub. ![]() In most of those tournaments, Stockfish had reached the finals with Leela Chess Zero, another chess engine. Stockfish, with changes available in Stockfish 16, has played in several computer chess tournaments and won the TCEC season 24 Superfinal, Swiss, Fischer Random, and Double Random Chess tournaments and the CCC 19 Bullet, 20 Blitz, and 20 Rapid competitions. Additionally, the Fishtest framework has been improved and is now able to run the tests needed to validate new ideas with 10,000s of CPU cores.” The search has undergone more optimization, leading to improved performance, particularly in longer analyses. The ongoing utilization of Leela’s data combined with a novel inference approach exploiting sparsity, and network compression ensure a speedy evaluation and modest binary sizes while allowing for more weights and higher accuracy. “This updated version of Stockfish introduces several enhancements, including an upgraded neural net architecture (SFNNv6), improved implementation, and refined parameterization. That means that Stockfish 15 can win some of the time, but the odds are always in Stockfish 16’s favour – it wins up to 12 times more game pairs.ĭiscussing the progress that had been made in this update, the Stockfish team said: If you’ve ever played against a computer engine and got whupped, Stockfish 16 can whup those engines, it’s that powerful.Īccording to the developers, this new release has been self-playing against the last major release, Stockfish 15 and after lots of games its Elo rating is up to 50 points higher. The team behind the open-source chess engine Stockfish has recently announced the availability of Stockfish 16.
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